PL - 390 basic technical indicators. Frequency range/tuning step - 64-108 MHz frequency modulation (FM); Smart step 0.01 MHz / 0.1 MHz; Can customize the frequency coverage: 87~108MHz(applicable to other countries except Japan Germany Russia standard); Germany: 87.5-108 MHz Japan: 108-108 MHz Russia: 64-108 MHz (including the part of the campus broadcast channel and domestic 2-5 television sound) - short wave (SW) 2300-21950 kHz; Smart step 1 kHz / 5 kHz - wave (MW) in 522-1620 kHz; Smart step 1 kHz / 9 kHz suitable for Asia Africa and Europe 520-1710 kHz. Smart step 1 kHz / 10 kHz (suitable for North America) - long wave (LW) 153-513 kHz. Smart step 1 kHz / 9 kHz; Noise limit sensitivity frequency modulation (FM) (S/N = 30 db) is better than 3 uV short wave (SW) (S/N = 26 db) is better than that of 20 uV medium wave (MW) (S/N = 26 db) is better than that of 1 mV/m long wave (LW) (S/N = 26 db) is better than 10 mV/m; Amplitude modulation bandwidth (BW) choice: 1/2/3/4/6 KHz low selectivity frequency modulation (FM) > 60 dB (plus or minus 150 KHz) short wave (SW) > 60 dB (BW = 3 KHz + / - 5 KHz) medium wave (MW) > 60 dB (BW = 3 KHz plus or minus 9 KHz) long wave (LW) > 60 dB (BW = 3 KHz plus or minus 9 KHz). FM stereo separation degree: better than 35 dB low power output distortion (10%) : horn: 180 mW or higher x 2 headphones: p 10 mW / 32 stereo headset several low store memories: a total of 550 frequency modulation (FM) 100 short wave (SW) 250 of the 100 mW (mW) long wave (LW) 100. Double wake model: radio rings at buzzer sooner. Static electric current frequency modulation (FM) /= 250 mA.